Offshore photovoltaic panel cleaning device

Abstract

An offshore photovoltaic panel cleaning device belongs to the technical field of offshore photovoltaic equipment and is composed of a shell, a cover plate, a propeller, a mechanical arm, a filtering water tank, a control assembly and a battery pack, the control assembly controls the propeller and the filtering water tank to start and stop, the propeller provides power for movement of the shell of the whole device, seawater is desalinated through the filtering water tank, and the battery pack is connected with the cover plate. And finally, the water is sprayed out through a nozzle on the mechanical arm to clean the offshore photovoltaic panel. The device is novel and compact in structure, all parts are convenient to disassemble and assemble, and later maintenance and replacement of all the parts are facilitated. According to the invention, seawater desalination operation can be carried out, and the desalted seawater is used for cleaning the photovoltaic panel, so that corrosion of the seawater to the photovoltaic panel can be effectively prevented, and the service life of the photovoltaic panel is prolonged. The surface of the photovoltaic panel can be accurately cleaned, and compared with traditional manual cleaning operation, the cleaning efficiency is improved, and the personnel accident rate is reduced.

Description

Technical Field

[0001] The utility model belongs to the technical field of offshore photovoltaic equipment and relates to an offshore photovoltaic panel cleaning device. Background Art

[0002] At present, my country's power structure is still dominated by thermal power and hydropower, but it is also actively developing and utilizing other power generation methods, such as wind power, nuclear power, solar power, etc. These new energy power generation methods are gradually increasing their proportion in total power generation. Solar power generation uses solar photovoltaic cells or solar thermal power generation systems to convert sunlight into electrical energy, which has the advantages of being renewable and environmentally friendly.

[0003] The installation of photovoltaic systems has high requirements for land use. Every 1 megawatt requires about 0.016 square kilometers of land. Therefore, my country's photovoltaic industry is shifting its attention from land to sea. Compared with traditional onshore photovoltaics, offshore photovoltaics have obvious advantages. Offshore photovoltaic power stations are not restricted by terrain and can make full use of tidal flats, islands, etc., effectively alleviating the problem of land resource shortage. They are not affected by severe weather such as wind, sand, and rainstorms, and can generate electricity continuously and stably. In addition, offshore photovoltaics can also be combined with the development of the marine economy. Offshore photovoltaics can be integrated with offshore wind power, marine ranching, seawater desalination, offshore hydrogen production and other technologies to share space and facilities, and promote industrial upgrading and transformation.

[0004] The surface of photovoltaic panels is covered by dust, ice and snow, and bird excrement, which will significantly reduce the power generation efficiency of photovoltaic panels. The uniform coverage of photovoltaic panels by dust will reduce the overall power generation efficiency but will not damage the photovoltaic panels themselves. Ice and snow or bird excrement will cause the photovoltaic panels to be partially blocked, causing the blocked area to generate high temperatures, and eventually lead to partial burning of the photovoltaic panels. Therefore, in the process of photovoltaic power generation, it is essential to clean the photovoltaic panels at a certain frequency. At present, land photovoltaic panels have been gradually cleaned by machines, while offshore photovoltaic panels are mainly cleaned by manpower. The cost of manual cleaning operations is relatively high, and due to the changeable offshore environment, higher requirements are placed on the safety of operations. Utility Model Content

[0005] In view of the current shortcomings of manual cleaning of offshore photovoltaic panels, such as high cleaning cost and low operational safety, the utility model proposes an offshore photovoltaic panel cleaning device, which can efficiently and accurately clean offshore photovoltaic panels with high operating efficiency and can further improve the safety of offshore operations.

[0006] The offshore photovoltaic panel cleaning device provided in this application adopts the following technical solution:

[0007] An offshore photovoltaic panel cleaning device, characterized in that the cleaning device comprises:

[0008] The shell body is a semi-enclosed hollow cavity structure as a whole;

[0009] A cover plate, connected and arranged on the top of the shell, for protecting the internal components of the shell;

[0010] A propeller, connected to the bottom of the housing, used for driving the device to move;

[0011] A mechanical arm, connected and fixed in the shell, with the top thereof extending out of the cover plate;

[0012] A filter water tank, fixedly disposed in the housing, for filtering and converting seawater;

[0013] A control component, connected and fixed in the housing, used for controlling the on and off of the filter water tank and the start and stop of the propeller;

[0014] The battery pack is connected and fixed in the shell, and forms a power supply connection with the control component and the thruster.

[0015] By adopting the above technical solution, the control component controls the start and stop of the thruster and the filter water tank, the thruster provides power for the movement of the entire device shell, the seawater is converted through the filter water tank, and finally the sea photovoltaic panels are cleaned by spraying water through the high-pressure water nozzle on the robotic arm.

[0016] Furthermore, the number of the thrusters is 8, which are installed at four positions on the bottom of the shell, with 2 thrusters arranged side by side in each position. The thruster model is TD5-CCW, with a rated working voltage of 24V, a current of 18A, and a thrust of 5kg.

[0017] By adopting the above technical solution, a pair of thrusters are respectively arranged in four directions to effectively meet the propulsion and steering operations of the device.

[0018] Furthermore, the robotic arm is fixed to the inner bottom surface of the shell through a bracket, a nozzle is provided at the front end of the robotic arm, and a camera is connected to the rear end.

[0019] By adopting the above technical solution, the bracket provides stable support for the robotic arm, so that a tight connection is formed between the robotic arm and the shell. The nozzle is provided to facilitate the entry of fresh water into the nozzle, which is beneficial for flushing the photovoltaic panels. The camera setting can realize the identification of the stained area, which is beneficial for controlling the nozzle for precise cleaning.

[0020] Furthermore, the bracket is connected to an ultra-short baseline positioning system consisting of an acoustic beacon and a transponder antenna, and the transponder antenna extends out from a small hole on the cover plate.

[0021] By adopting the above technical solution, an ultra-short baseline positioning system is set up to facilitate the measurement of the direction and distance of the device at sea, which is beneficial to the control of the device.

[0022] Furthermore, the control component is composed of a single-chip microcomputer, an electromagnetic relay and a high-pressure water pump. The single-chip microcomputer is connected to the electromagnetic relay, the high-pressure water pump is controlled by the electromagnetic relay, and the single-chip microcomputer is connected to the camera through AD conversion.

[0023] By adopting the above technical solution, AD signal conversion is formed between the camera and the single-chip microcomputer, and then the single-chip microcomputer controls the electromagnetic relay, thereby realizing real-time control of the on and off of the high-pressure water pump, so as to facilitate accurate cleaning operations of the photovoltaic panels.

[0024] Furthermore, the filtered water tank is a split structure, with one side of the filtered water tank connected to the water inlet pipe and the other side connected to the water outlet pipe. The water outlet pipe is connected to the high-pressure water pump in the control component. From the water inlet pipe to the water outlet pipe, the interior of the filtered water tank is sequentially provided with a filter screen, an activated carbon layer, and a PP cotton filter element layer. The thickness of the activated carbon layer is greater than the thickness of the filter screen and the PP cotton filter element layer.

[0025] By adopting the above technical solution, the filter net in the filter water tank is used to filter large particles of impurities, the activated carbon layer is beneficial to the adsorption of salt and impurities in seawater, the PP cotton filter element layer is used to remove fine particles of impurities, and the filter water tank is set to a split structure, which is conducive to the installation and replacement of the internal filter layer.

[0026] In summary, the present invention includes at least one of the following beneficial technical effects:

[0027] (1) The utility model has a novel and compact structure, and the components are easy to disassemble and assemble, which is conducive to the maintenance and replacement of the components in the later stage.

[0028] (2) The utility model can perform seawater desalination operations and use the desalinated seawater to clean photovoltaic panels, which can effectively prevent seawater from corroding the photovoltaic panels and extend the working life of the photovoltaics.

[0029] (3) The utility model can intelligently identify the stained area of ​​the photovoltaic panel through the camera, and can accurately clean the surface of the photovoltaic panel. Compared with traditional manual cleaning operations, it improves the cleaning efficiency and reduces the incidence of personnel accidents. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 It is a schematic diagram of the three-dimensional structure of the utility model.

[0031] Figure 2 It is a schematic diagram of the main structure of the utility model.

[0032] Figure 3 It is a schematic diagram of the structure of the utility model from top view.

[0033] Figure 4 for Figure 3Schematic diagram of the full cross-section structure at AA in the middle.

[0034] Figure 5 This is a schematic diagram of the mechanical arm installation structure in the utility model.

[0035] Figure 6 It is a schematic diagram of the structure of the filter water tank in the utility model.

[0036] In the figure: shell 1, cover plate 2, through hole 3, robotic arm 4, transponder antenna 5, thruster 6, water inlet port 7, camera 8, water outlet port 9, nozzle 10, battery pack 11, filtered water tank 12, control component 13, bracket 14, acoustic beacon 15, filter screen 16, activated carbon layer 17, PP cotton filter element layer 18. DETAILED DESCRIPTION

[0037] The present invention is further explained below in conjunction with the accompanying drawings and specific embodiments. It should be understood that these embodiments are only used to illustrate the present invention and are not used to limit the scope of the present invention. After reading the present invention, modifications to various equivalent forms of the present invention by those skilled in the art fall within the scope defined by the claims attached to this application.

[0038] Example 1

[0039] like Figure 1 As shown, an offshore photovoltaic panel cleaning device is composed of a shell 1 with an overall semi-enclosed hollow cavity structure, a cover plate 2 connected to the top of the shell 1 for protecting the internal components of the shell 1, a propeller 6 connected to the bottom of the shell 1 for driving the device to move, a mechanical arm 4 connected and fixed in the shell 1, the top of which extends out of the cover plate 2, a filter water tank 12 fixed in the shell 1 for seawater filtration and conversion, a control component 13 connected and fixed in the shell 1 for switching on and off the filter water tank 12 and starting and stopping the propeller 6, and a battery pack 11 connected and fixed in the shell 1 to form a power supply connection with the control component 13 and the propeller 6. The control component 13 controls the start and stop of the propeller 6 and the filter water tank 12, and the propeller 6 provides power for the movement of the entire device shell, desalinates the seawater through the filter water tank 12, and finally sprays it out through the nozzle 10 on the mechanical arm 4 to clean the offshore photovoltaic panel.

[0040] Example 2

[0041] In order to effectively meet the propulsion and steering operations of the device, in this embodiment, a propeller is provided at the bottom of the shell to achieve the above-mentioned. Figure 1 , Figure 2 , Figure 4As shown, there are eight thrusters 6 installed at four positions on the bottom of the housing 1, with two thrusters arranged side by side in each position. The thruster 6 model is TD5-CCW, with a rated working voltage of 24V, a current of 18A, and a thrust of 5kg.

[0042] In order to form a stable support for the robot arm and to form a tight connection between the robot arm and the shell, a bracket is used to fix it in this embodiment. Specifically, Figure 4 , Figure 5 As shown, the robot arm 4 is fixed to the inner bottom surface of the shell 1 by a bracket 14; in order to facilitate the flushing of the photovoltaic panel, a nozzle 10 is set at the front end of the robot arm 4; in order to realize the identification of the stain area on the surface of the photovoltaic panel and facilitate the control of the nozzle for precise cleaning, a camera 8 is connected to the rear end of the robot arm 4.

[0043] In order to facilitate the measurement of the direction and distance of the cleaning device at sea and facilitate the control of the entire device, an ultra-short baseline positioning system is set up in this embodiment. Specifically, an acoustic beacon 15 and a transponder antenna 5 are set on the bracket 14. The transponder antenna 5 extends from a small hole in the cover plate. The acoustic beacon uses a model ATT-400 with a working range of 750 meters and a transmitting frequency of 26KHz. The transmitting transducer and the receiving array are installed on the operating ship or offshore workstation, and the transponder is fixed on the cleaning device. When the transmitting transducer sends out a sound pulse, the transponder antenna receives it and then sends back a sound pulse through the acoustic beacon. After the receiving array receives it, the phase difference between the two is measured, and the distance from the cleaning device to the array is calculated based on the arrival time of the sound wave.

[0044] Example 3

[0045] In order to achieve accurate cleaning of the photovoltaic panel, the control component 13 is used in this embodiment. Specifically, Figure 4-5 As shown, the control component 13 is composed of a single chip microcomputer, an electromagnetic relay and a high-pressure water pump. The single chip microcomputer is connected to the electromagnetic relay, the high-pressure water pump is controlled by the electromagnetic relay, and the single chip microcomputer is connected to the camera through AD conversion. The AD signal conversion is formed between the camera and the single chip microcomputer, and then the single chip microcomputer controls the electromagnetic relay, thereby realizing real-time control of the on and off of the high-pressure water pump.

[0046] In order to desalinate seawater, this embodiment is achieved by filtering the water tank, specifically, Figure 6As shown, one side of the filter water tank 12 is connected to the water inlet pipe 7, and the other side is connected to the water outlet pipe 9, and the water outlet pipe 9 is connected to the high-pressure water pump in the control component 13. From the water inlet pipe 7 to the water outlet pipe 9, the interior of the filter water tank 12 is sequentially provided with a filter screen 16, an activated carbon layer 17, and a PP cotton filter core layer 18, and the thickness of the activated carbon layer 17 is greater than that of the filter screen 16 and the PP cotton filter core layer 18. The filter water tank 12 is arranged in a split structure, which is convenient for the installation and replacement of the internal filter layer.

Claims

1. An offshore photovoltaic panel cleaning device, characterized in that: The cleaning device comprises: The shell (1) is a semi-enclosed hollow cavity structure as a whole; A cover plate (2) is connected to the top of the housing (1) and is used to protect the internal components of the housing (1); A propeller (6) connected to the bottom of the housing (1) and used for driving the device to move; A mechanical arm (4) is connected and fixed in the housing (1), and the top of the mechanical arm extends out of the cover plate (2); A filtered water tank (12), fixedly disposed in the housing (1), for filtering and converting seawater; A control component (13), connected and fixed in the housing (1), used for controlling the on / off of the filtered water tank (12) and the start / stop of the propeller (6); A battery pack (11) is connected and fixed in the housing (1) and forms a power supply connection with the control component (13) and the propeller (6).

2. The offshore photovoltaic panel cleaning device according to claim 1, characterized in that: The number of the thrusters (6) is eight and they are installed at four positions on the bottom of the housing (1), with two thrusters arranged side by side in each position. The model of the thrusters (6) is TD5-CCW, with a rated working voltage of 24V, a current of 18A, and a thrust of 5kg.

3. The offshore photovoltaic panel cleaning device according to claim 1, characterized in that: The mechanical arm (4) is fixed to the inner bottom surface of the shell (1) via a bracket (14); a nozzle (10) is provided at the front end of the mechanical arm (4) and a camera (8) is connected to the rear end.

4. The offshore photovoltaic panel cleaning device according to claim 3, characterized in that: The bracket (14) is connected to an ultra-short baseline positioning system consisting of an acoustic beacon (15) and a transponder antenna (5), and the transponder antenna (5) extends out from a small hole on the cover plate.

5. The offshore photovoltaic panel cleaning device according to claim 1, characterized in that: The control component (13) is composed of a single chip microcomputer, an electromagnetic relay and a high-pressure water pump, the single chip microcomputer is connected to the electromagnetic relay, the high-pressure water pump is controlled by the electromagnetic relay, and the single chip microcomputer is connected to the camera (8) through AD conversion.

6. The offshore photovoltaic panel cleaning device according to claim 1, characterized in that: The filter water tank (12) is a split structure. One side of the filter water tank (12) is connected to the water inlet pipe (7), and the other side is connected to the water outlet pipe (9). The water outlet pipe (9) is connected to the high-pressure water pump in the control component (13). From the water inlet pipe (7) to the water outlet pipe (9), the interior of the filter water tank (12) is provided with a filter screen (16), an activated carbon layer (17), and a PP cotton filter core layer (18) in sequence. The thickness of the activated carbon layer (17) is greater than the thickness of the filter screen (16) and the PP cotton filter core layer (18).

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